Juki Dsc-244 User manual

No.03

40092224

INSTRUCTION MANUAL

DSC-244

DSC-244V

NOTE : Read safety instructions carefully and understand them before using.

Retain this Instruction Manual for future reference.

Please do not hesitate to contact our distributors or agents in your area for further information when neces-

sary.

＊The description covered in this instruction manual is subject to change for improvement of the

commodity without notice.

13 · 09 Printed in Japan

SEWING MACHINERY BUSINESS UNIT

2-11-1, TSURUMAKI, TAMA-SHI,

TOKYO, 206-8551, JAPAN

PHONE : (81)42-357-2371

FAX : (81)42-357-2380

http://www.juki.com

For the sewing machine, automatic machine and ancillary devices (hereinafter collectively referred to as

"machine"), it is inevitable to conduct sewing work near moving parts of the machine. This means that there

is always a possibility of unintentionally coming in contact with the moving parts. Operators who actually

operate the machine and maintenance personnel who are involved in maintenance and repair of the machine

are strongly recommended to carefully read to fully understand the following SAFETY PRECAUTIONS

before using/maintaining the machine. The content of the SAFETY PRECAUTIONS includes items which

are not contained in the speci¿cations of your product.

The risk indications are classi¿ed into the following three different categories to help understand the meaning

of the labels. Be sure to fully understand the following description and strictly observe the instructions.

Warning label

❶

❷

❸

❶TKere iVWKe SRVVibiliW\ WKaWVligKW WR VeriRXV inMXr\Rr GeaWK Pa\be FaXVeG

TKere iVWKe SRVVibiliW\ WKaWinMXr\Pa\be FaXVeGb\WRXFKing PRYing SarW

❷TRSerIRrPVeZing ZRrNZiWK VaIeW\ gXarG

TRSerIRrPVeZing ZRrNZiWK VaIeW\ FRYer

TRSerIRrPVeZing ZRrNZiWK VaIeW\ SrRWeFWiRn GeYiFe

❸%e VXre WR WXrn WKe SRZer OFF beIRre Farr\ing RXW PaFKineKeaGWKreaGing

neeGle FKanging bRbbin FKangingRr Riling anGFleaning

❸

❷

❶

EleFWriFalVKRFN

Ganger label

DANGER :

TKiVinGiFaWiRn iVgiYen ZKere WKere iVan iPPeGiaWe Ganger RI GeaWK Rr VerRXV inMXr\iIWKe SerVRn in FKarge Rr an\WKirG

SarW\ PiVKanGleVWKe PaFKine Rr GReVnRW aYRiGWKe GangerRXV ViWXaWiRn ZKen RSeraWing Rr PainWaining WKe PaFKine

WARNING :

TKiVinGiFaWiRn iVgiYen ZKere WKere iVa SRWenWialiW\ IRr GeaWK Rr VeriRXV inMXr\iIWKe SerVRn in FKarge Rr an\WKirG

SarW\ PiVKanGleVWKe PaFKine Rr GReVnRW aYRiGWKe GangerRXV ViWXaWiRn ZKen RSeraWing Rr PainWaining WKe PaFKine

CAUTION :

TKiVinGiFaWiRn iVgiYen ZKere WKere iVa Ganger RI PeGiXP WR PinRr inMXr\iIWKe SerVRn in FKarge Rr an\WKirGSar

W\ PiVKanGleVWKe PaFKine Rr GReVnRW aYRiGWKe GangerRXV ViWXaWiRn ZKen RSeraWing Rr PainWaining WKe PaFKine

IWePV reTXiring VSeFial aWWenWiRn

PiFWRrial Zarning inGiFaWiRn

TKere iVa riVN RI inMXr\iIFRnWaFW

ing a PRYing VeFWiRn

PiFWRrial Zarning

inGiFaWiRn

%e aZare WKaWKRlGing WKe VeZing

PaFKine GXring RSeraWiRn Fan

KXrW\RXr KanGV

TKere iVa riVN RI eleFWriFal VKRFN iI

FRnWaFWing a KigKYRlWage VeFWiRn

TKere iVa riVN RI enWanglePenWin

WKe belWreVXlWing in inMXr\

TKere iVa riVN RI a bXrn iIFRnWaFW

ing a KigKWePSeraWXre VeFWiRn

TKere iVa riVN RI inMXr\iI\RX

WRXFK WKe bXWWRn Farrier

%e aZare WKaWe\e Ge¿FienF\ Fan

be FaXVeGb\lRRNing GireFWl\aWWKe

laVer beaP

InGiFaWiRn label

TKe FRrreFW GireFWiRn iVinGiFaWeG

TKere iVa riVN RI FRnWaFW beWZeen

\RXr KeaGanGWKe VeZing Pa

FKine

CRnneFWiRn RI a earWK Fable iV

inGiFaWeG

TO ENSURE SAFE USE OF YOUR SEWING MACHINE

I E[SlanaWiRn RI riVN leYelV

(II)

E[SlanaWiRn RI SiFWRrial Zarning inGiFaWiRnVanGZarning labelV

– 14 –

20.MOTOR PULLEY AND SEWING SPEED

1 . Use the 3-phase 400 W AC clutch motor.

2 . Use an M type V belt.

3 . The following table shows the relationship among the motor pulley and the sewing speed.

Model Sewing speed Effective

diameter of

handwheel

Number

of poles

Frequency Rotational

speed of

motor

Effective diameter of

motor pulley

DSC-244

DSC-244V 2,200 sti/min φ76.0 4 50Hz 1430 rpm φ115

60Hz 1715 rpm φ95

(Caution) The effective diameter of the motor pulley is obtained by subtracting 5 mm from the outside diameter.

(2,000sti/min)

The item attached with an asterisk (*) applies to the DSC-244.

– 13 –

SAFETY PRECAUTIONS

 WKen iWiVneFeVVar\WR RSen WKe FRnWrRl bR[ FRnWaining eleFWriFal SarWV be VXre WR WXrn WKe SRZer

RII anGZaiWIRr ¿Ye PinXWeVRr PRre beIRre RSening WKe FRYer in RrGer WR SreYenWaFFiGenWleaGing WR

eleFWriFal VKRFN

AFFiGenWPeanVWR FaXVe

SerVRnal inMXr\Rr GeaWK Rr

GaPage WR SrRSerW\

DANGER

CAUTION

%aViFSreFaXWiRn

 %e VXre WR reaGWKe inVWrXFWiRn PanXal anGRWKer e[SlanaWRr\GRFXPenWV VXSSlieGZiWK aFFeVVRrieVRI

WKe PaFKine beIRre XVing WKe PaFKineCareIXll\NeeSWKe inVWrXFWiRn PanXal anGWKe e[SlanaWRr\GRFX

PenWV aWKanGIRr TXiFN reIerenFe

 TKe FRnWenWRI WKiVVeFWiRn inFlXGeViWePV ZKiFK are nRW FRnWaineGin WKe VSeFi¿FaWiRnVRI \RXr SrRGXFW

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 TKRVe ZKR XVe a KearWSaFer KaYe WR XVe WKe PaFKine aIWer FRnVXlWaWiRn ZiWK a PeGiFal VSeFialiVW

SaIeW\ GeYiFeVanGZarning labelV

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SreYenWaFFiGenWWKaWFan reVXlWin SerVRnal inMXr\Rr GeaWK

 %e VXre WR NeeSWKe Zarning labelVaGKereGRn WKe PaFKine Flearl\YiVible in RrGer WR SreYenWaFFiGenW

WKaWFan reVXlWin SerVRnal inMXr\Rr GeaWK IIan\RI WKe labelVKaVVWaineGRr FRPe XnVWXFN be VXre WR

FKange iWZiWK a neZRne

ASSliFaWiRn anGPRGi¿FaWiRn

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WKe PaFKine IRr an\aSSliFaWiRn RWKer WKan WKe inWenGeGRne

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FKine ZKiFK KaVbeen PRGi¿eGRr alWereG

EGXFaWiRn anGWraining

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FaWeWrain WKePbeIRreKanG

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TXrning WKe SRZer RII: TXrning WKe SRZer VZiWFK RII WKen rePRYing WKe SRZer SlXg IrRP WKe RXWleW

TKiVaSSlieVWR WKe IRllRZing

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VWRSV FRPSleWel\

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age RI eleFWriFal FRPSRnenWV

iii

PRECAUTIONS TO %E TA.EN IN 9ARIOUS OPERATION STAGES

TranVSRrWaWiRn

 %e VXre WR liIW anGPRYe WKe PaFKine in a VaIe Panner WaNing WKe PaFKine ZeigKW in FRnViGeraWiRnReIer

WR WKe We[W RI WKe inVWrXFWiRn PanXal IRr WKe PaVV RI WKe PaFKine

 %e VXre WR WaNe VXI¿FienWVaIeW\ PeaVXreVWR SreYenWIalling Rr GrRSSing beIRre liIWing Rr PRYing WKe

PaFKine in RrGer WR SrRWeFW againVW aFFiGenWWKaWFan reVXlWin SerVRnal inMXr\Rr GeaWK

 OnFe WKe PaFKine KaVbeen XnSaFNeG neYer reSaFN iWIRr WranVSRrWaWiRn WR SrRWeFW WKe PaFKine againVW

breaNage reVXlWing IrRP Xne[SeFWeGaFFiGenWRr GrRSSing

UnSaFNing

 %e VXre WR XnSaFN WKe PaFKine in WKe SreVFribeGRrGer in RrGer WR SreYenWaFFiGenWWKaWFan reVXlWin

SerVRnal inMXr\Rr GeaWK In WKe FaVe WKe PaFKine iVFraWeG in SarWiFXlarbe VXre WR FareIXll\FKeFN nailV

TKe nailVKaYe WR be rePRYeG

 %e VXre WR FKeFN WKe PaFKine IRr WKe SRViWiRn RI iWV FenWer RI graYiW\ anGWaNe iWRXW IrRP WKe SaFNage

FareIXll\in RrGer WR SreYenWaFFiGenWWKaWFan reVXlWin SerVRnal inMXr\Rr GeaWK

InVWallaWiRn

(I) Table anGWable VWanG

 %e VXre WR XVe -U.I genXine Wable anGWable VWanGin RrGer WR SreYenWaFFiGenWWKaWFan reVXlWin Ser

VRnal inMXr\Rr GeaWK IIiWiVineYiWable WR XVe a Wable anGWable VWanGZKiFK are nRW -U.I genXine RneV

VeleFW WKe Wable anGWable VWanGZKiFK are able WR VXSSRrWWKe PaFKine ZeigKW anGreaFWiRn IRrFe GXring

RSeraWiRn

 IIFaVWerVare ¿WWeGWR WKe Wable VWanG be VXre WR XVe WKe FaVWerVZiWK a lRFNing PeFKaniVP anGlRFN

WKePWR VeFXre WKe PaFKine GXring WKe RSeraWiRnPainWenanFeinVSeFWiRn anGreSair in RrGer WR SreYenW

aFFiGenWWKaWFan reVXlWin SerVRnal inMXr\Rr GeaWK

(II) Cable anGZiring

 %e VXre WR SreYenWan e[Wra IRrFe IrRP being aSSlieGWR WKe Fable GXring WKe XVe in RrGer WR SreYenW

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anGWKe Fable

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(I9) MRWRr

 %e VXre WR XVe WKe VSeFi¿eGraWeGPRWRr (-U.I genXine SrRGXFW) in RrGer WR SreYenWaFFiGenWFaXVeGb\

bXrnRXW

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%eIRre RSeraWiRn

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in SerVRnal inMXr\Rr GeaWK

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SXlle\

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Fan reVXlWin SerVRnal inMXr\Rr GeaWK

– 12 –

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 11 –

 %e VXre WR WXrn WKe SRZer RII anGFKeFN WR be VXre WKaWWKe PaFKine anGPRWRr FRPSleWel\VWRS beIRre re

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FOR SAFE OPERATION

1. For the safety, never operate the sewing machine with the ground wire for the

power supply removed.

2. Be sure to turn OFF the power switch in prior when connecting/disconnecting the

power plug.

3. When thunders occurs, stop the work for the safety and disconnect the power plug.

4. When the sewing machine is suddenly moved from a cold place to a warm place,

there is a case where dew condensation may occur. Turn ON the power after there

is no worry of the drop of water.

5. To prevent ﬁres, periodically draw out the power plug from the plug socket and

clean the root of the pins and the space between pins.

6. The hook rotates at a high speed while the machine is in operation.

To prevent possible injury to hands, be sure to keep your hands away from the

vicinity of the hook during operation. In addition, be sure to turn OFF the power to

the machine when replacing the bobbin.

7. To avoid possible accidents due to abrupt start of the machine, be sure to turn OFF

the power to the machine.

8. Be careful of handling this product so as not to pour water or oil, shock by dropping,

and the like since this product is a precision instrument.

9. When tilting or returning the sewing machine to the home position, hold the upper

side of the machine head with both hands and perform the work quietly so that

ﬁngers or the like are not caught in the machine.

1. To avoid personal injury, never put your ﬁngers under the needle when you turn ON

the power switch or operate the sewing machine.

2. To avoid personal injury, never put your ﬁngers into the thread take-up cover while

the sewing machine is in operation.

3. Turn OFF the power switch when tilting the machine head, or removing the belt

cover or the V belts.

4. To prevent possible personal injury caused by being caught in the machine, keep

your ﬁngers, head and clothes away from the handwheel and the thread take-up

while the sewing machine is in operation. In addition, place nothing around it.

5. To avoid personal injury, never operate the sewing machine with the ﬁnger guard

removed.

6. To avoid personal injury, be careful not to allow your ﬁngers in the machine when

tilting the machine head.

CAUTION :

Note that safety devices such as “eye guard”, “ﬁnger guard”, etc. may be omitted from the

illustrations in this Instruction Manual for easy explanation.

When operating the machine, be sure not to remove these safety devices.

– 10 –

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 9 –

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

BEFORE OPERATION

• Before you put the machine into operation for the ﬁrst time after the set-up, clean it thoroughly .

Remove all dust gathering during transportation and oil it well.

• Conﬁrm that voltage has been correctly set.

Conﬁrm that the power plug has been properly connected to the power supply.

• Never use the machine in the state where the voltage type is different from the designated one.

• The direction of normal rotation of the machine is counterclockwise as observed from the pulley side.

Take care not to allow the machine to rotate in the reverse direction.

• Never operate the machine unless the machine head and the oil tank have been ﬁlled with oil.

• For a test run, remove the bobbin and the needle thread.

•

For the ﬁrst month, decrease the sewing speed and run the sewing machine at a speed of 2,000 sti/min or less.

• Operate the handwheel after the machine has totally stopped.

CAUTION :

Check the following so as to prevent maloperation of and damage to the machine.

– 8 –

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

vii

ENGLISH

DECLARATION OF INCORPORATION OF PARTLY COMPLETED MACHINERY

We hereby declare that the sewing machine (sewing head) described below ;

1. Must not be put into service until the machinery to which it is incorporated has been declared in

conformity with the provisions of the Directive 2006/42/EC, and

2. Conforms to the essential requirements of the Directive 2006/42/EC, described in the technical

documentation, and

3. To be prepared with the above technical documentation compiled in accordance with part B of

Annex VII, and

4. Also to conform to the RoHS Directive 2011/65/EU

5. Relevant information on which should be transmitted in response to a reasoned request by the

national authorities, by the electronic method or other according to the request.

Applied harmonized standards, in particular :

EN ISO12100, EN ISO10821, EN 50581

Manufacturer :

JUKI CORPORATION

2-11-1, Tsurumaki, Tama-shi, Tokyo, Japan

Model

Description Industrial Sewing Machine

Function make stitches and sew

DSC-240 Series

– 7 –

(DSC-244)

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

viii

CONTENTS

SPECIFICATIONS........................................................................................................................ 1

1. SETTING UP THE SEWING MACHINE................................................................................ 1

2. INSTALLING THE THREAD STAND .................................................................................... 2

3. INSTALLING THE BELT COVER AND THE BOBBIN WINDER.......................................... 2

4. LUBRICATOIN ...................................................................................................................... 3

5. ATTACHING THE NEEDLE .................................................................................................. 4

6. WINDING A BOBBIN ............................................................................................................ 4

7. THREADING THE BOBBIN CASE ....................................................................................... 4

8. INSTALLING THE TAKE-UP THREAD GUIDE ROD ........................................................... 5

9. THREAD THE MACHINE HEAD........................................................................................... 5

10. ADJUSTING THE STITCH LENGTH .................................................................................... 5

11. FORWARD/REVERSE SEAM RATIO................................................................................... 6

12. THREAD TENSION............................................................................................................... 6

13. THREAD TAKE-UP SPRING ................................................................................................ 6

14. PRESSURES OF THE PRESSER FOOT AND WALKING FOOT........................................ 7

15. HEIGHT OF THE FEED DOG (DSC-244) ............................................................................. 7

16. ADJUSTING THE WALKING FOOT AND THE PRESSER FOOT....................................... 8

17. NEEDLE-TO-HOOK RELATIONSHIP................................................................................... 9

18. HOW TO CHANGE FROM ELLIPTICAL FEED TO HORIZONTAL FEED......................... 10

19. HOW TO CHANGE FROM HORIZONTAL FEED TO ELLIPTICAL FEED......................... 12

20. MOTOR PULLEY AND SEWING SPEED........................................................................... 14

21. TROUBLES AND CORRECTIVE MEASURES .................................................................. 14

– 1 –

Model DSC-244 DSC-244V

Type of sewing

machine head

Cylinder-bed, 1-needle, unison-feed lockstitch

machine

Cylinder-bed, 1-needle, unison-feed lockstitch

machine (horizontal drop feed)

Usage Suited for sewing medium-to heavy weight materials

Sewing speed Max. 2,200 sti/min

Stitch length 0 to 6 mm

Lift of presser foot Hand lifter:9 mm、Knee lifter:15 mm

Thread take-up lever Slide type thread take-up

Needle bar stroke 36 mm

Needle to be used GROZ-BECKERT 135×17 Nm90 to Nm130（Standard Nm110）

Needle system #50 to #20

Stitch adjusting method Dial

Lubrication method By an oiler and an oil wick centralized in face plate

Motor to be used 400W Electro-stop motor (4P)

Oil to be used New Defrix Oil No.1

Noise - Equivalent continuous emission sound

pressure level (LpA) at the workstation :

A-weighted value of 83.5 dB; (Includes KpA =

2.5 dB); according to ISO 10821- C.6.2 -ISO

11204 GR2 at 2,200 sti/min.

- Sound power level (LWA) ;

A-weighted value of 89.5 dB; (Includes KWA

= 2.5 dB); according to ISO 10821- C.6.2

-ISO 3744 GR2 at 2,200 sti/min.

- Equivalent continuous emission sound

pressure level (LpA) at the workstation :

A-weighted value of 80.0 dB; (Includes KpA =

2.5 dB); according to ISO 10821- C.6.2 -ISO

11204 GR2 at 2,200 sti/min.

1. Mounting position of the knee lifter

(Caution) The knee lifter should be mounted before the

moter is installed.

2. Carry the sewing machine with two persons.

(Caution) Do not hold the handwheel.

3. Do not put protruding articles such as the screwdriver and

the like at the location where the sewing machine is placed.

4. Setting the sewing machine

Holding countersunk screw 1, washer 2and nut 3supplied

with the unit, fix the sewing machine on the table with

aligned with rubber packing 4at four locations.

5. Securely attach head support rod to the table until it goes no

further.

– 6 –

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 5 –

Thread the machine head in the order of 1through to !2.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 2 –

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 3 –

(Caution) Lubrication to section A: For the DSC-244V, pull

bed top face cover 1toward you, then lubricate

section A.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 4 –

TGROZ-BECKERT13517N110.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 3 –

(Caution) Lubrication to section A: For the DSC-244V, pull

bed top face cover 1toward you, then lubricate

section A.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 4 –

TGROZ-BECKERT13517N110.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 5 –

Thread the machine head in the order of 1through to !2.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 2 –

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

– 1 –

Model DSC-244 DSC-244V

Type of sewing

machine head

Cylinder-bed, 1-needle, unison-feed lockstitch

machine

Cylinder-bed, 1-needle, unison-feed lockstitch

machine (horizontal drop feed)

Usage Suited for sewing medium-to heavy weight materials

Sewing speed Max. 2,200 sti/min

Stitch length 0 to 6 mm

Lift of presser foot Hand lifter:9 mm、Knee lifter:15 mm

Thread take-up lever Slide type thread take-up

Needle bar stroke 36 mm

Needle to be used GROZ-BECKERT 135×17 Nm90 to Nm130（Standard Nm110）

Needle system #50 to #20

Stitch adjusting method Dial

Lubrication method By an oiler and an oil wick centralized in face plate

Motor to be used 400W Electro-stop motor (4P)

Oil to be used New Defrix Oil No.1

Noise - Equivalent continuous emission sound

pressure level (LpA) at the workstation :

A-weighted value of 83.5 dB; (Includes KpA =

2.5 dB); according to ISO 10821- C.6.2 -ISO

11204 GR2 at 2,200 sti/min.

- Sound power level (LWA) ;

A-weighted value of 89.5 dB; (Includes KWA

= 2.5 dB); according to ISO 10821- C.6.2

-ISO 3744 GR2 at 2,200 sti/min.

- Equivalent continuous emission sound

pressure level (LpA) at the workstation :

A-weighted value of 80.0 dB; (Includes KpA =

2.5 dB); according to ISO 10821- C.6.2 -ISO

11204 GR2 at 2,200 sti/min.

1. Mounting position of the knee lifter

(Caution) The knee lifter should be mounted before the

moter is installed.

2. Carry the sewing machine with two persons.

(Caution) Do not hold the handwheel.

3. Do not put protruding articles such as the screwdriver and

the like at the location where the sewing machine is placed.

4. Setting the sewing machine

Holding countersunk screw 1, washer 2and nut 3supplied

with the unit, fix the sewing machine on the table with

aligned with rubber packing 4at four locations.

5. Securely attach head support rod to the table until it goes no

further.

– 6 –

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work

after turning the power off and ascertaining that the motor is at rest.